⟁ Illinois Well Data field records · 2026 survey

Illinois Well Data › Lasalle County › Marseilles (61341)

Marseilles, IL (61341): well depth, water level & drilling cost

✓ 727 ISGS records · Lasalle County

320 ftmedian well depth
264 ft–380 fttypical depth range
—median static water level
12 gpmmedian yield (345 tests)

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How deep are wells in and around Marseilles (61341), Illinois?

The median drilled well depth in and around Marseilles (61341) is 320 ft, based on 711 wells with recorded depths in the state ISGS database. Half fall between 264 ft and 380 ft; 90% are shallower than 420 ft.

How much does it cost to drill a well in and around Marseilles (61341)?

Applying published per-foot rates to the local median depth of 320 ft: drilling and casing alone typically runs $8,000–$20,800; a complete system including pump, pressure tank, and hookup typically runs $19,200–$32,000. Actual quotes depend on site access, geology, and casing requirements.

What is the static water level in and around Marseilles (61341)?

Few static water level measurements are recorded for this area.

Drilled depth distribution

0–50 ft 2 50–100 ft 16 100–150 ft 28 150–200 ft 27 200–300 ft 170 300–400 ft 317 400–600 ft 142 600+ ft 9
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Part of Lasalle County well records.

Method: medians computed from ISGS records (ISGS water wells; engineering, mineral and stratigraphic test borings, mine shafts, outcrops and monitoring wells are excluded, as are wells the survey records as plugged; depths 0-5,000 ft), grouped by ZIP from the recorded address. Cost estimate applies published per-foot ranges to the local median depth — full methodology & sources.